package io.gitee.thant.utils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

public class HttpUtil {
	//调用该类直接跳过ssl证书
	static {
		try {
			trustAllHttpsCertificates();
            HttpsURLConnection.setDefaultHostnameVerifier((urlHostName, session) -> true);
		} catch (Exception e) {}
	}
    
    /**
    * 跳过ssl证书
    *
    * @throws NoSuchAlgorithmException
    * @throws KeyManagementException
    */
	private static void trustAllHttpsCertificates()
			throws NoSuchAlgorithmException, KeyManagementException {
		TrustManager[] trustAllCerts = new TrustManager[1];
		trustAllCerts[0] = (TrustManager) new TrustAllManager();
		SSLContext sc = SSLContext.getInstance("SSL");
		sc.init(null, trustAllCerts, null);
		HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
	}

	private static class TrustAllManager implements X509TrustManager {
		@Override
		public X509Certificate[] getAcceptedIssuers() { return null; }
		@Override
		public void checkServerTrusted(X509Certificate[] certs, String authType) {}
		@Override
		public void checkClientTrusted(X509Certificate[] certs, String authType) {}
	}

	public static byte[] doGet(String httpurl) {
		HttpURLConnection connection = null;
		InputStream is = null;
		BufferedReader br = null;
		byte[] result = null;
		try {
			// 创建远程url连接对象
			URL url = new URL(httpurl);
			// 通过远程url连接对象打开一个连接，强转成httpURLConnection类
			connection = (HttpURLConnection)url.openConnection();
			// 设置连接方式：get
			connection.setRequestMethod("GET");
			// 设置连接主机服务器的超时时间：15000毫秒
			connection.setConnectTimeout(15000);
			// 设置读取远程返回的数据时间：60000毫秒
			connection.setReadTimeout(60000);
			// 发送请求
			connection.connect();
			// 通过connection连接，获取输入流
			if (connection.getResponseCode() == 200) {
				/*if (null != encode) {
					encode.setLength(0);
					encode.append(connection.getContentEncoding());
				}*/
				int len = 0;
				ByteBuilder bb = new ByteBuilder();
				byte[] buf = new byte[8192];
				is = connection.getInputStream();
				len = is.read(buf);
				while (len>0) {
					bb.append(Arrays.copyOf(buf, len));
					len = is.read(buf);
				}
				result = bb.toArrayRef();
				/*br = new BufferedReader(new InputStreamReader(is));
				// 存放数据
				StringBuilder sbf = new StringBuilder();
				String temp = null;
				while ((temp = br.readLine()) != null) {
					sbf.append(temp);
					sbf.append("\r\n");
				}
				result = sbf.toString();*/
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			// 关闭资源
			if (null != br) {
				try {
					br.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			if (null != is) {
				try {
					is.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			System.out.println(connection.getContentType());
			System.out.println(connection.getContentEncoding());
			connection.disconnect();// 关闭远程连接
		}

		return result;
	}
	
	public static byte[] doPost(String httpUrl, String param) {
		HttpURLConnection connection = null;
		InputStream is = null;
		OutputStream os = null;
		BufferedReader br = null;
		byte[] result = null;
		try {
			URL url = new URL(httpUrl);
			// 通过远程url连接对象打开连接
			connection = (HttpURLConnection) url.openConnection();
			// 设置连接请求方式
			connection.setRequestMethod("POST");
			// 设置连接主机服务器超时时间：15000毫秒
			connection.setConnectTimeout(15000);
			// 设置读取主机服务器返回数据超时时间：60000毫秒
			connection.setReadTimeout(60000);

			// 默认值为：false，当向远程服务器传送数据/写数据时，需要设置为true
			connection.setDoOutput(true);
			// 默认值为：true，当前向远程服务读取数据时，设置为true，该参数可有可无
			connection.setDoInput(true);
			// 设置传入参数的格式:请求参数应该是 name1=value1&name2=value2 的形式。
			connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
			// 设置鉴权信息：Authorization: Bearer da3efcbf-0845-4fe3-8aba-ee040be542c0
			//connection.setRequestProperty("Authorization", "Bearer da3efcbf-0845-4fe3-8aba-ee040be542c0");
			// 通过连接对象获取一个输出流
			os = connection.getOutputStream();
			// 通过输出流对象将参数写出去/传输出去,它是通过字节数组写出的
			os.write(param.getBytes());
			// 通过连接对象获取一个输入流，向远程读取
			if (connection.getResponseCode() == 200) {
				/*if (null != encode) {
					encode.setLength(0);
					encode.append(connection.getContentEncoding());
				}*/
				int len = 0;
				ByteBuilder bb = new ByteBuilder();
				byte[] buf = new byte[8192];
				is = connection.getInputStream();
				len = is.read(buf);
				while (len>0) {
					bb.append(Arrays.copyOf(buf, len));
					len = is.read(buf);
				}
				result = bb.toArrayRef();
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			// 关闭资源
			if (null != br) {
				try {
					br.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			if (null != os) {
				try {
					os.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			if (null != is) {
				try {
					is.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			// 断开与远程地址url的连接
			connection.disconnect();
		}
		return result;
	}
}
